<!DOCTYPE html>
<html>
<head>
<script type="text/javascript">

function m()
{
  document.getElementById("f").style.position = "fixed";
}

</script>
</head>
<body onload="m();">
  <div style="-moz-transform: translate(50px, 50px); border: 1px solid red; width: 7ch;">
    A
    <div id="f" style="left: 50px; top: 100px; border: 1px solid blue; width: 7ch;">
      0
    </div>
  </div>
</body>
</html>
